color perception

[doug]

SByer often mentions how color is "broken on the web." Turns out it's also broken in your brain, or at least your eyes are easily fooled.

http://i41.tinypic.com/ae8ugx.jpg

You probably see a blue and a green spiral. They are in fact both the same shade of bluish green.

The blue and the green | Bad Astronomy | Discover Magazine

 

[efusco]

Ok, that's cool...hope you don't mind I shared it on FB.

 

[doug]

It's not mine.... share as you will.

 

[SByer]

Awesome! It's pretty stunning how robust the effect in this image is - I put a stripe of the same color across it, and if I focus on the intersections, I can see that they are the same color, but looking at the whole image it seems like a different color yet again.

It's why any pro-level creative editing application worth it's salt will have very little color in the interface - it's too easy to tilt perception.

 

[BBHighway]

I did some engineering work on image processing some years ago. The mpeg3 image compression used on DVDs looks great to our eyes, but in fact it's actually a pretty horribly distorted image. It's just that the distortions are carefully designed so that they are occur in ways that our eyes can't detect.

 

[doug]

The mpeg3 image compression used on DVDs looks great to our eyes

I thought there was no mpeg3 because it got incorporated into the mpeg2 standard.

 

[TEG]

Yeah, DVDs use MPEG2.

HD disks like Blu-Ray can use various formats like MPEG4, VP6, etc.

 

[kgama963]

I'd sware that one is blue.